lcd screen saver manufacturer

Established in 1995,Right Group Co, Ltd(Flagship Brand Name Monifilm) is a Taiwan Based leading screen protector manufacturer and developer of  screen protection products and optical film solution for consumer electronic and industrial applications.

Our products and solutions range from high end tempered-glass for smart phones, tablets, laptops and gadgets, to hybrid compound material and specialise optical film screen protection  like Anti-Reflective, Anti-Bacteria, Anti-Bluelight and Microlouver Technology Privacy Screen …etc; with a network of clients and business associates that streched across USA, ME, EU, Japan and Asia.

Phrozen LCD screen protector, made of durable and high-transparency material to protect your LCD screen from the risk of resin spillage damage without affecting your prints.

CTL display products are manufactured to rigorous standards. Our display products are consistently recognized as among the highest quality display products in the industry. Nevertheless, due to the nature of LCD technology, an LCD display may exhibit a small number of very small bright or dark spots on the screen. Often, these spots are noticeable only when the screen continuously displays a certain solid color such as an all-white or all black background. This type of background can be present when initially turning a computer on, or when a computer switches the display to a specific screen-saver.

An LCD display is made up of tens of thousands of individual pixels, and each pixel is made up of 3 individual sub-pixels (red, blue and green). In-fact, a 17" LCD has over 1,300,000 pixels and almost 4 million sub-pixels! Each sub-pixel is controlled by an individual transistor which turns the individual sub-pixel that it controls either on or off to create the image on your screen. An anomaly occurring during the manufacturing process can cause an individual transistor to continuously light or fail to light an individual pixel element, causing one of these small spots on the screen. Although this anomaly occurs relatively rarely in individual transistors, there are millions of sub-pixels on each LCD screen, and it is not uncommon for an LCD screen from any manufacturer to contain a few of these transistor anomalies and their associated bright or dark spots. For a manufacturer to sell only LCD""s with no transistor anomalies would result in a prohibitive cost to you, the consumer…one many times higher than it is today. Most people and applications are tolerant of a small number of these transistor anomalies on an LCD screen, and prefer the lower cost of LCD""s that existing standards allow.

CTL sets simple & strict limits as to the allowable number of non-performing pixels or sub-pixels on our LCD display and laptop computer screens. These criteria supplement our existing Warranty and are applicable during the warranty period for all CTL and 2go LCD displays as follows:

The LCD display of products under warranty will be replaced if CTL determines that it has 6 or more bright sub-pixels, 6 or more dark sub-pixels or a combination of 6 or more bright and dark sub pixels.

A screensaver (or screen saver) is a computer program that blanks the display screen or fills it with moving images or patterns when the computer has been idle for a designated time. The original purpose of screensavers was to prevent phosphor burn-in on CRT or plasma computer monitors (hence the name)OLED technology, which has individual pixels vulnerable to burnout), screensaver programs are still used for other purposes. Screensavers are often set up to offer a basic layer of security by requiring a password to re-access the device.volunteer computing projects.

Before the advent of LCD screens, most computer screens were based on cathode ray tubes (CRTs). When the same image is displayed on a CRT screen for long periods, the properties of the exposed areas of the phosphor coating on the inside of the screen gradually and permanently change, eventually leading to a darkened shadow or "ghost" image on the screen, called a screen burn-in. Cathode ray televisions, oscilloscopes and other devices that use CRTs are all susceptible to phosphor burn-in, as are plasma displays to some extent.

For CRTs used in public, such as ATMs and railway ticketing machines, the risk of burn-in is especially high because a stand-by display is shown whenever the machine is not in use. Older machines designed without burn-in problems taken into consideration often display evidence of screen damage, with images or text such as "Please insert your card" (in the case of ATMs) visible even when the display changes while the machine is in use. Blanking the screen is out of the question as the machine would appear to be out of service. In these applications, burn-in can be prevented by shifting the position of the display contents every few seconds, or by having a number of different images that are changed regularly.

Later CRTs were much less susceptible to burn-in than older models due to improvements in phosphor coatings, and because modern computer images are generally lower contrast than the stark green- or white-on-black text and graphics of earlier machines. LCD computer monitors, including the display panels used in laptop computers, are not susceptible to burn-in because the image is not directly produced by phosphors (although they can suffer from a less extreme and usually non-permanent form of image persistence).

While modern screens are not susceptible to the issues discussed above, screensavers are still used. Primarily these are for decorative/entertainment purposes, or for password protection. They usually feature moving images or patterns and sometimes sound effects.

As screensavers are generally expected to activate when users are away from their machines, many screensavers can be configured to ask users for a password before permitting the user to resume work. This is a basic security measure against another person accessing the machine while the user is absent.

Some screensavers activate a useful background task, such as a virus scan or a volunteer computing application (such as the SETI@home project).Ken Burns panning and zooming effect is sometimes used to bring the image to life.

The first screensaver was allegedly written for the original IBM PC by John Socha, best known for creating the Norton Commander; he also coined the term screen saver. The screensaver, named scrnsave, was published in the December 1983 issue of the Softalk magazine. It simply blanked the screen after three minutes of inactivity (an interval which could be changed by recompiling the program).

The Atari 400 and 800"s screens would also go through random screensaver-like color changes if they were left inactive for about 8 minutes. Normal users had no control over this, though programs did. These computers, released in 1979, are technically earlier "screen savers." Prior to these computers, games for the 1977 Atari VCS/2600 gaming console such as Combat and Breakout, included color cycling in order to prevent burn-in of game images into 1970s-era televisions. In addition, the first model of the TI-30 calculator from 1976 featured a screensaver, which consisted of a decimal point running across the display after 30 seconds of inactivity. This was chiefly used to save battery power, as the TI-30 LED display was more power intensive than later LCD models. These are examples of screensavers in ROM or the firmware of a computer.

In 2015 the screensaver "Event listeners"work of art that was purchased by a museum (Museum of Applied Arts, Vienna) using the cryptocurrency bitcoin.

Modern graphics technologies such as 3D computer graphics have allowed a wide variety of screensavers to be made. Screensavers with realistic 3D environments can be programmed and run on modern computers.

Screensavers are usually designed and coded using a variety of programming languages as well as graphics interfaces. Typically the authors of screensavers use the C or C++ programming languages, along with Graphics Device Interface (GDI), such as OpenGL ("Open Graphics Library", which works on many, if not most, platforms capable of 3D rendering), or alternatives such as Microsoft DirectX (which is limited to Microsoft platforms, mainly Microsoft Windows and the Microsoft Xbox), to craft their final products. Several OS X screensavers are created and designed using Quartz Composer. The screensaver interfaces indirectly with the operating system to cause the physical display screen to be overlaid with one or more graphic "scenes". The screensaver typically terminates after receiving a message from the operating system that a key has been pressed or the mouse has been moved.

If the system detects inactivity lasting longer than the time specified in the control panel, check if the active program is a simple program (and not another screensaver) by sending the "WM_SYSCOMMAND" message with the "SC_SCREENSAVE" argument. If the program calls in response the standard system function (DefWindowProc), the screensaver defined in the control panel screen runs.

A Windows screensaver is a regular Portable Executable (PE) with the .scr file extension. This enables malware authors to add ".scr" to the name of any win32 executable file, and thereby increase likelihood that users of Microsoft Windows will run it unintentionally. In addition, this program should support the following command line parameters:

Previews the screensaver as child of window. (presented as unsigned decimal number) is an identifier (handle) of the window in which the preview should appear.

Internally, the screensaver must define a class that is subclass of ScreenSaverView. The new class must be assigned as NSPrincipalClass in the xcode project, so that when the screensaver is launched by the system, this class gets instantiated.

As one of the first screensavers appeared in 8-bit Atari computers, forcing systemic color changes when the computer is idle lasting a few minutes (different times depending on the model), stored in the system ROM of the computer.

Monitors running screensavers consume the same amount of power as when running normally, which can be anywhere from a few watts for small LCD monitors to several hundred for large plasma displays. Most modern computers can be set to switch the monitor into a lower power mode, blanking the screen altogether. A power-saving mode for monitors is usually part of the power management options supported in most modern operating systems, though it must also be supported by the computer hardware and monitor itself.

Using a screensaver with a flat panel or LCD screen not powering down the screen can actually decrease the lifetime of the display, since the fluorescent backlight remains lit and ages faster than it would if the screen is turned off and on frequently.product lifetime. In most cases, the tube is an integral part of the LCD and the entire assembly needs to be replaced. This is not true of LED backlit displays.

Thus the term "screen saver" is now something of a misnomer – the best way to save the screen and also save electricity consumed by screen would simply be to have the computer turn off the monitor. Screensavers displaying complex 3D graphics might even add to overall power draw.

After Dark was an early screensaver for the Macintosh platform, and later PC/Windows, which prominently featured whimsical designs such as "flying toasters". Perhaps in response to the workplace environment in which they are often viewed, many screensavers continue this legacy of whimsy by populating the idle monitor with animals or fish, games, and visual expressions of mathematics equations (through the use of fractals, Fourier transforms or other means) as in the Electric Sheep screensaver.

The screensaver is also a creative outlet for computer programmers. The Unix-based screensaver XScreenSaver collects the display effects of other Unix screensavers, which are termed "display hacks" in the demo scene.

On older versions of Microsoft Windows the native screensaver format had the potential to install a virus when run (as a screen saver was just an ordinary application with a different extension). When any file with the file suffix ".scr" was opened, for example from an e-mail attachment, Windows would execute the .scr (screensaver) file automatically: this had the potential to allow a virus or malware to install itself. Modern versions of Windows can read tags left by applications such as Internet Explorer and verify the publisher of the file, presenting a confirmation to the user.

On August 5, 2006, the BBC reported that "free screensavers" and "screensavers" respectively were the first and third most likely search terms to return links to malware, the second being BearShare.

By launching the "bubbles" screensaver executable through the bubbles.scr /p65552 command-line parameter, it runs as desktop wallpaper, the bubbles are smaller, and there are more bubbles on screen.

Then, at IBC 2018, Sony launched the BVM-HX310. It’s a display based on LCD technology, but it has much the same specification as the X300 and targets much the same market as the X300. Why would a company risk competing with its own product, having already created a successful display that was widely received as the holy grail?

Sony’s Daniel Dubreuil, product manager for professional monitors, describes the situation slightly differently, and points out some of the advantages that the BVM-HX310 enjoys as an LCD-based display. “The reason we decided to move that direction was that the new tech has an advantage over OLED. The new technology LCD can display 1000 NITs, but… on the X300 you can’t have the full-screen white at 1000 NITs. You can have 10% of the surface of the screen at 1000 NITs. When you grow that to full screen, you can have only 150 NITs. It’s to protect the panel.”

At the same time, Dubreuil says, the new display maintains the superb contrast performance of the BVM-X300. “It’s not a normal, or a regular LCD like we say today. It’s a new technology that improves the contrast radio to the level of the X300. You can see that benefit in terms of contrast ratio and blacks. The ratio is still a million to one, the same as the X300, [but] it can maintain 1000 NITs at full screen.”

The technology used in Sony’s HX310 display may offer a solution. Flanders Scientific’s Desmet explains: “The easiest way to try to think about it is that you have a backlight that’s always on at full blast, and then what you have up front is essentially a standard LCD panel with red, green and blue filters.

Then, in between that you have the light modulating cell layer. The best analogy for what that is, is it’s like a monochromatic LCD. A lot of people call this dual-layer LCD… we prefer light-modulating cell layer, LMCL. That’s what the people who developed it call it. That’s a bit more accurate because it’s not like it’s just two regular LCD panels.”

The technology is perhaps most closely associated with Panasonic, dating back to press releases in 2016, and Desmet suggests they may be supplying TVLogic and Eizo as well as Flanders Scientific and Sony. Dubreuil is keen to emphasise that Sony’s implementation takes full advantage of the company’s long experience in the field. “We call it new tech LCD. The most important for us is the result. A couple of competitors are using similar tech to achieve monitors with 1000 NITs full screen. Sony has exclusivity, the way the LCD [is made] could be similar, but the backlight, surface treatment and other stuff are different, which makes our panel unique.”

Either way, the results shown at IBC were spectacular, competing ably with Sony’s own BVM-X300 in a side-by-side test in the blacked-out tent. “You have pixel level control of that light,” Dubreuil says. “You have something that allows you to have one area of the screen with a black level of about .001 NITs, then you can have 1000 NITs just a few pixels over.”

Laurent Treherne at Goldcrest is cautiously enthusiastic. “The X310 seems to be a natural progression… from the quick review we’ve done so far the picture quality seems to be at least as good as the X300 with the added bonus of the LCDtechnology being able to deliver brighter peak whites at 1000 NITs over a large area. Unfortunately, the viewing angle seems to be much narrower compared to [OLED] which is a real problem when you are grading with clients. Having a client sitting off at an angle from the monitor and commenting on the grade while seeing something slightly different to the colourist who is sitting directly in front is obviously not manageable.”

This competition between OLED displays and LCD displays is fundamental to the display market in 2019. OLEDs are panels made of tiny lights, and break down into two groups: those (like the BVM-X300) which use red, green and blue emitters, and the large panels manufactured by companies such as LG, mainly targeting the domestic market.

LCDs are panels made of tiny filters with a light behind them. Peak brightness is controlled by the brightness of the backlight, but some light always leaks through, so the lowest brightness is not entirely black. Illuminating the LCD panel in a series of separate zones makes it possible to display very bright and very dark subjects simultaneously. Since the zones are larger than a single pixel, though, the brightest white and darkest black cannot be displayed in adjacent pixels. Bright areas may appear to bleed into dark ones.

LCML may offer advantages beyond sheer imaging performance. Flanders’ Desmet suggests that, “any time a display technology doesn’t have that consumer market, manufacturers don’t get involved and you don’t get economies of scale.” Referring to the high-power backlights, he says that “nobody needs a 55in, two-foot-thick TV. They draw more power, they produce more heat. Every single one of them is going to have at least a few fans built in because they do generate a fair bit of heat.” Even so, it’s likely to be easier to make than OLED. “You can use a lot of the same basic infrastructure you can use to make normal LCDs. You can afford to do this in small runs without having these giant facilities dedicated to nothing but top emission RGB OLED.”

Tests by influential technology reviews site RTINGS, have found screen burn can set in as quickly as two years after buying a new OLED television and by association, monitor. That’s much quicker than previously expected in OLED TVs.

Screen burn, or burn-in, refers to an effect where part of an image that is no longer displayed is still visible on a different image, such as static logos that stay on the screen when running timecode, watching news channels and playing video games. The latest tests by RTINGS tested OLED for burn-in on a variety of content, from news and general TV to sports and gaming. During the testing period, the technology reviewers assessed and reported on the screens’ brightness and colour renderings every two weeks. The channels and content were respectively displayed in intervals of a five-hour ‘on’ period and one-hour ‘off’ period during a cycle that was repeated four times per day.

The tests found that when the TVs were set to maximum brightness and were showing gaming content and news channels, they were most affected by burn-in, as both pieces of content feature static logos on screen most of the time. After 4000 hours, the TVs testing this content displayed the mark of these logos on the screen, even when the content wasn’t being played.

The impartial tests seem to prove that Samsung’s QLED and Dynamic Crystal Colour UHD TVs aren’t susceptible to screen burn like other TVs and potentially monitors on the market, and as such Samsung is offering a market-leading ten-year screen burn warranty as a testament to the confidence in its QLED technology.